Lyndon Johnson had the highest approval rating among modern presidents — 74 percent — after succeeding John F. Kennedy, who was assassinated in 1963. Dwight Eisenhower had a job-approval rating of 70 percent.

“Obama’s first term was a difficult one,” Gallup said in its analysis. “However, he was able to maintain sufficient public support, particularly during the critical final months of the 2012 campaign, to win a second term in office.”